Introduction to the specifications and dimensions of hex key wrenches
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Introduction to the specifications of hex key wrenches: Hex key wrenches – their specifications include 2, 2.5, 3, 4, 5, 6, 7, 8, 10, 12, 14, 17, 18, 22, 24, 27, 32, 36. The designation codes for hex socket wrenches are T30, T40, T50, T60, T80; these types of wrenches are mainly used for tightening hex head screws. There are no specific specifications for ratchets; they are classified by length, with lengths of 100, 150, 200, 300, 375, 450, 600, 650. They can also be single-ended or double-ended, known professionally as straight wrenches and socket wrenches respectively. There are many different specifications available. The specifications for single-ended wrenches include 3.2, 4, 5, 5.5, 6, 7, 8, 9……70, 75, 80; these are used for tightening hexagonal head screws. The models of hex key wrenches are determined based on the dimension of the opposite sides of the hexagon. There are **standards** for bolt sizes. Comparison of hex key models with screw sizes: 4#, M5; 5#, M6; 6#, M8; 8#, M10; 10#, M12; 12#, M14, M16; 14#, M16, M20; 17#, M20; 19#, M24; 22#, M30; 27#, M36
These days, there are many imported tools available; hex keys, open-ended wrenches, and ring wrenches also come in metric and imperial versions. Wrenches of one system certainly cannot be used with screws of the other system. British hex keys are classified by fractions of 64, such as 3/64, 1/16, 5/64, 3/32, 7/64, 1/8, 9/64. . . .
Regular tools usually come with the equipment itself, and it’s difficult to find replacements for hex keys. . . . . . . . . . . . .